optical intensity channel. This channel has a nonnegative input

(representing the transmitted optical intensity), which is corrupted

by additive white Gaussian noise. To preserve the battery and for

safety reasons, the input is constrained in both its average and its

peak power. For a fixed ratio of the allowed average power to the

allowed peak power, the difference between the upper and the lower

bound tends to zero as the average power tends to infinity and their

ratio tends to one as the average power tends to zero.

When only an average power constraint is imposed on the input, the

difference between the bounds tends to zero as the allowed average

power tends to infinity, and their ratio tends to a constant as the

allowed average power tends to zero.

communication, optical communication, pulse amplitude modulation

(PAM).

-||- _|_ _|_ / __|__ Stefan M. Moser

[-] --__|__ /__\ /__ Senior Scientist, ETH Zurich, Switzerland

_|_ -- --|- _ / / Adjunct Professor, National Yang Ming Chiao Tung University, Taiwan

/ \ [] \| |_| / \/ Web: https://moser-isi.ethz.ch/

Last modified: Wed Nov 4 10:49:06 UTC+8 2009